Color reproduction system for carrying out color correction by changing over color correction parameters according to images of photographed subjects

Inactive Publication Date: 2006-03-07
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0013]It is, therefore, an object of the present invention to provide a c

Problems solved by technology

However, these data have conventionally been obtained by measurement using an expensive measuring instrument such as a spectrometer.
Therefore, it has not been possible to provide a simple color reproduction system.
Therefore, in order to carry out a simple color reproduction in high precision by using a general three-band digit

Method used

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  • Color reproduction system for carrying out color correction by changing over color correction parameters according to images of photographed subjects
  • Color reproduction system for carrying out color correction by changing over color correction parameters according to images of photographed subjects
  • Color reproduction system for carrying out color correction by changing over color correction parameters according to images of photographed subjects

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first embodiment

[0119]FIG. 1 is a diagram showing a structure of a color reproduction system relating to a first embodiment of the present invention. This color reproduction system consists of an image input unit 100 for photographing an image of an object, a color correcting section 200 for correcting the input image and generating an output image, and an image output unit 300.

[0120]In the color correcting section 200, an object recognizing section 201 recognizes an object within an input image. In other words, an area dividing section 201-1 of the object recognizing section 201 divides the input image into images of a plurality of areas. An input profile selecting section 201-2 selects a suitable input profile from among a plurality of input profiles for each divided area by changing over a switch 205. A device-independent color converting section 202 has a memory unit for storing a plurality of input profiles 1 to n (2021 to 202n). The device-independent color converting section 202 converts an ...

second embodiment

[0133]FIG. 6 is a diagram showing a structure of a color reproduction system relating to a second embodiment of the present invention. This color reproduction system consists of an image input unit 100 for photographing an image of an object, a color correcting section 220 for correcting the input image and generating an output image, and an image output unit 300.

[0134]In the color correcting section 220, an object recognizing section 221 recognizes an object within an input image. In other words, an area dividing section 221-1 of the object recognizing section 221 divides the input image into images of a plurality of areas. An input / output profile selecting section 221-2 selects a suitable input / output profile from among a plurality of input / output profiles for each divided area by changing over a switch 224. A device value converting section 222 has a memory unit for storing a plurality of input / output profiles 1 to N (2221 to 222N). The device value converting section 222 convert...

third embodiment

[0139]FIG. 9 is a diagram showing a structure of a color reproduction system relating to a third embodiment of the present invention. This color reproduction system consists of an image input unit 100 for photographing an image of an object, a color correction pre-processing section 240 for converting an input image into illumination variable image data (illumination variable image data by areas) 244, a color correcting section 245 for preparing an input profile from the illumination variable image data, converting the input image into a device-independent color image, and then converting the device-independent color image into an output image that matches the image output unit, and the image output unit 300 for outputting (displaying and printing) an output image.

[0140]The third embodiment is characterized in that the input image has information necessary for preparing a plurality of input profiles, and has an illumination-variable data structure that uses an input profile accordin...

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Abstract

A color reproduction system has a color image input section, and a color correcting section for correcting colors of a subject image obtained by photographing a subject by the color image input section. The color correcting section corrects colors by changing over a plurality of color correction parameters according to a subject image signal from the color image input section.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based upon and claims the benefit of priority from the prior Japanese Patent Applications No. 11-151969, filed May 31, 1999; and No. 11-172772, filed Jun. 18, 1999, the entire contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]The present invention relates to a color reproduction system having a color image processing unit for estimating colors of a photographed subject from photographic signals obtained by photographing the subject by a color photographing unit such as a digital camera or the like.[0003]As a method of estimating color information on a photographed subject under a predetermined illumination light from color-image data obtained by photographing the subject by a color photographing unit such as a digital camera or the like, there has been proposed a method of using foresight information on the photographed subject such as a base function or a correlation matrix of a s...

Claims

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Application Information

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IPC IPC(8): H04N9/73
CPCG06T7/408H04N9/735H04N1/6072H04N1/603G06T7/90H04N23/88
Inventor ISHII, KENSUKEOHSAWA, KENRO
Owner OLYMPUS CORP
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